1: With platinum(IV) oxide; hydrogen; trifluoroacetic acid T=20°C; P=2585.81 Torr; 48 h; Autoclave; 2: With potassium carbonate in water pH=7; Saturated solution;

1.1: sulfuric acid / |Reflux 2.1: N-bromosuccinmide / tetrachloromethane / 16 h / |Reflux 3.1: hydrazine hydrate / methanol / 5 h / |Reflux 4.1: trifluoroacetic acid; hydrogen; platinum(IV) oxide / 48 h / 20 °C / 2585.81 Torr / |Autoclave 4.2: pH 7 / |Saturated solution View Scheme

1.1: N-bromosuccinmide / tetrachloromethane / 16 h / |Reflux 2.1: hydrazine hydrate / methanol / 5 h / |Reflux 3.1: trifluoroacetic acid; hydrogen; platinum(IV) oxide / 48 h / 20 °C / 2585.81 Torr / |Autoclave 3.2: pH 7 / |Saturated solution View Scheme

1.1: potassium hydroxide; water 2.1: sulfuric acid / |Reflux 3.1: N-bromosuccinmide / tetrachloromethane / 16 h / |Reflux 4.1: hydrazine hydrate / methanol / 5 h / |Reflux 5.1: trifluoroacetic acid; hydrogen; platinum(IV) oxide / 48 h / 20 °C / 2585.81 Torr / |Autoclave 5.2: pH 7 / |Saturated solution View Scheme